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News 2018


ddb participated in the AGU Union Fellows Committee meeting in Washington, DC, July 10-11


Helliker, Brent R., Song, Xin, Goulden, Michael L., Clark, Kenneth, Bolstad, Paul, Munger, J. William, Chen, Jiquan, Noormets, Asko, Hollinger, David, Wofsy, Steve, Martin, Timothy, Baldocchi, Dennis, Euskirchenn, Eugenie, Desai, Ankur, Burns, Sean P. 2018  Assessing the interplay between canopy energy balance and photosynthesis with cellulose δ18O: large-scale patterns and independent ground-truthing. Oecologia. doi:10.1007/s00442-018-4198-z


A new flux tower has been set up in the Delta.  We moved the Twitchell Island alfalfa site to a pasture on Sherman Island.  The alfalfa site was becoming too weedy and old.  The new site is next to Uncle Julio and Zia Bruna's asparagus barn.  ddb played baseball with his cousins there when a kid.  The pasture is much less infested with pepperweed than the prior Sherman Island pasture. We have ac power and the Silver lab is deploying 3 sets of auto chambers to measure CO2, CH4 and N2O fluxes from the soil in our footprint. We will measure eddy fluxes of CO2, H2O and CH4.

Staff News

Kuno Kasak joins the biometlab as a new postdoc from Estonia. Kuno has a fellowship from the Baltic American Freedom Foundation and will work on greenhouse gas emissions from our network of sites in the Delta


Robert Shortt joins the Biometlab as a new graduate student. Robert received his BS in Geography from San Francisco State and will work on the greenhouse gas project, too.


Daniel D. Richter, Sharon A. Billings, Peter M. Groffman, Eugene F. Kelly, Kathleen A. Lohse, William H. McDowell, Timothy S. White, Suzanne Anderson, Dennis D. Baldocchi, Steve Banwart, Susan Brantley, Jean J. Braun, Zachary S. Brecheisen, Hilairy E. Hartnett, Sarah E. Hobbie, Jerome Gaillardet, Esteban Jobbagy, Hermann F. Jungkunst, Clare E. Kazanski, Jagdish Krishnaswamy, Daniel Markewitz, Katherine O’Neill, Clifford S. Riebe, Paul Schroeder, Christina Siebe, Whendee L. Silver, Aaron Thompson, Anne Verhoef, Ganlin Zhang.   Strengthening the biogeosciences in environmental research networks.  Biogeoscience

Effect of drought-induced salinization on wetland methane emissions, gross ecosystem productivity, and their interactions." by Chamberlain, Samuel; Hemes, Kyle; Eichelmann, Elke; Szutu, Daphne; Verfaillie, Joseph ; Baldocchi, Dennis. Environmental Research Letters Article reference: ERL-105655


Hemes,KS, Chamberlain, SD, Eichelmann, E. Knox, SH. Baldocchi, DD. A biogeochemical compromise: The high methane cost of sequestering carbon in restored wetlands. Geophysical Research Letters https://doi.org/10.1029/2018GL077747

Anderson, M.; Gao, F.; Knipper, K.; Hain, C.; Dulaney, W.; Baldocchi, D.; Eichelmann, E.; Hemes, K.; Yang, Y.; Medellin-Azuara, J.; Kustas, W. Field-Scale Assessment of Land and Water Use Change over the California Delta Using Remote Sensing. Remote Sens. 201810, 889. doi:10.3390/rs10060889

Hemes, K. S., Eichelmann, E., Chamberlain, S., Knox, S., Oikawa, P.Y., Sturtevant, C., Verfaillie, J, Szutu, D. Baldocchi, D.D. 2018. "A unique combination of aerodynamic and surface properties contribute to surface cooling in restored wetlands of the Sacramento‐San Joaquin Delta, California." Journal of Geophysical Research: Biogeosciences https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2018JG004494.  


Chu et al. Temporal dynamics of aerodynamic canopy height derived from eddy covariance momentum flux data across North American Flux Networks. Geophysical Research Letters.2018GL079306  

Baldocchi, D.  Penuelas, J.  The Physics and Ecology of Mining Carbon Dioxide from the Atmosphere by Ecosystems. Nature Sustainability. NATSUSTAIN-18021155B


Miriam Johnston from Harvard and in Moorcroft's lab is setting up a thermal imaging system at Tonzi Ranch. She spent a few days in the lab setting up the system.

Paul Moorcroft, Harvard, stopped by for lunch and discussed collaborations with Tonzi data and the ED model

Sebastian Wolf was in town, while servicing his flux towers at Sagehen. He gave a seminar at LBL on his drought work.

Xiangming Xiao from Oklahoma stopped to visit while in Berkeley for a workshop. We have collaborated on modeling and validating him VPM model over rice and savanna


ddb attended the Fluxnet CH4 Synthesis Workshop at the Stanford in DC Center, Washington, DC. The meeting was organized by Biomet lab alumnus, Sara Knox, who is a postdoc with Rob Jackson at Stanford.  The meeting was attended by several other Biomet Lab alumni (Ben Runkle, Oliver Sonnentag, Housen Chu).  Of the 100+ site years of data available for synthesis, current and past members of the Biomet lab may have collected up to 60 site years. Lots of energy and excitement for potential synthesis papers.  Felt like Fluxnet CO2 circa 2000.

Elke Eichelmann, Kyle Hemes and Amy Valach attended the 33rd Conference on Agricultural and Forest Meteorology in Boise, ID.  Papers and posters presented include 

Aerodynamic and Surface Properties Contribute to Surface Cooling in Restored Wetlands of the Sacramento-San Joaquin Delta, California. Kyle S. Hemes University of California Berkeley, Berkeley, CA; and E. Eichelmann, S. Chamberlain, S. H. Knox, P. Y. Oikawa, C. Sturtevant, and D. D. Baldocchi

Evaporation and Transpiration from Wetlands in the Sacramento-San Joaquin River Delta University of California Berkeley, Berkeley, CA; and K. S. Hemes, T. Scanlon, and D. D. Baldocchi

Network at a Glance: Probing the Turbulent Statistics and Spectral Characteristics Across AmeriFlux Sites by Using the Roving Eddy Covariance System, Housen Chu LBNL, Berkeley, CA; and S. Chan, S. C. Biraud, S. Dengel, D. Billesbach, C. Hanson, and D. D. Baldocchi

Subcanopy Flux Measurements in Forest Ecosystems Sebastian Wolf ETH Zürich, Zürich, Switzerland; and E. Paul-Limoges and D. Baldocchi


Baldocchi, D.D. (2018). "Must we incorporate soil moisture information when applying light use efficiency models with satellite remote sensing information?" New Phytologist 218(4): 1293-1294.

This article is a Commentary on Stocker et al., 218: 1430–1449.



Field-scale Assessment of Land and Water Use Change over the  California Delta using Remote Sensing Martha Anderson *, Feng Gao, Kyle Knipper, Christopher Hain, Wayne Dulaney, Dennis Baldocchi, Elke Eichelmann, Kyle Hemes, Yun Yang, Remote Sensing


Lars Hedin, of Princeton, visited the Biomet lab and we discussed his new work on scaling and the development of root traits for soil biogeochemistry


ddb spoke on the physics and ecology of mining CO2 from the atmosphere at the Berkeley Sierra Club in The John Muir Series: Answering the Call of Life& Part I: Climate Change


Eichelmann, E., K. S. Hemes, S. H. Knox, P. Y. Oikawa, S. D. Chamberlain, C. Sturtevant, J. Verfaillie, and D. D. Baldocchi. 2018. The effect of land cover type and structure on evapotranspiration from agricultural and wetland sites in the Sacramento–San Joaquin River Delta, California. Agricultural and Forest Meteorology 256–257:179-195.

Sean DuBois, Ankur R. Desai, Aditya Singh, Shawn P. Serbin, Michael L. Goulden, Dennis D. Baldocchi, Siyan Ma, Walter C. Oechel, Sonia Wharton, Eric L. Kruger, Philip A. Townsend. Using imaging spectroscopy to detect variation in terrestrial ecosystem productivity across a water-stressed landscape" Accepted Ecological Applications

Chamberlain, S. D., Anthony, T. , Silver, W. L., Eichelmann, E. , Hemes, K. S., Oikawa, P. Y., Sturtevant, C. , Szutu, D. J., Verfaillie, J. G. and Baldocchi, D. D. (2018), Soil properties and sediment accretion modulate methane fluxes from restored wetlands. Glob Change Biol. Accepted Author Manuscript. . doi:10.1111/gcb.14124



On phylogenetic stability in thermal functional traits of plant communities dominating 129 ecosystems in Northern and Southern America by Siyan Ma, Beverly E. Law , Gregory Starr Ankur R. Desai, Gil Bohrer, Jordan G. Barr, Bai Yang, Joseph P. McFadden, Richard P. Phillips, Matteo Detto, William J. Massman, Dennis D. Baldocchi was re-submitted to New Phytologist

Kyle S Hemes. Samuel D Chamberlain, Elke Eichelmann , Sara H. Knox, Dennis D Baldocchi,. A biogeochemical compromise: The high methane cost of sequestering carbon in restored wetlands.  Geophysical Research Letters

Baldocchi, D.D. Commentary on Stocker et al Quantifying soil moisture impacts on light use efficiency across biomes. New Phytologist

Hemes, K., Eichelmann, E., Chamberlain, S. Knox, S. , Oikawa, P., Sturtevant, C., Szuto, D., Verfaillie, J., Baldocchi, D. A unique combination of aerodynamic and surface properties contribute to surface cooling in restored wetlands of the Sacramento-San Joaquin Delta, California. Journal of Geophysical Research, Biogeoscience


Pierre Gentine, from Columbia, visited before his BASC seminar. We talked on evaporation flux partitioning and the role of vpd controlling fluxes with drought.

Elke Eichelmann hosted Andrew Oliphant's San Francisco State's bioclimatology class, GEOG 314, on a field trip to the Delta field site. About 25 students toured the greenhouse gas flux sites over ag crops and restored wetlands across the Delta.


ddb gave the keynote lecture on the 'Physics and Ecology of Mining CO2 from the Atmosphere by plants, trees and ecosystems' at the Enviroday Symposium, held annually at the University of Virginia, Environmental Science Department to show case the research of the graduate and undergradate students.


Chamberlain, Samuel; Anthony, Tyler; Silver, Whendee; Eichelmann, Elke; Hemes, Kyle; Oikawa, Patricia; Sturtevant, Cove; Szutu, Daphne; Verfaillie, Joseph; Baldocchi, Dennis. Soil properties and sediment accretion modulate methane fluxes from restored wetlands. Accepted Global Change Biology

Staff News

Ana Andreu Mendez has rejoined the lab. She comes back with a Marie Curie fellowship from the European Union and will work on water and energy exchange of savannas

Amy Valach has joined the Biomet lab as a postdoc.  Amy received her PhD from the University of Lancaster studying voc fluxes and spent time in Antarctica working with the British Antarctic Survey


Baldocchi, DD, Penuelas,J. The Physics and Ecology of Mining CO2 from the Atmosphere. Nature Sustainability. submitted


In advance of the Berkeley Atmospheric Science Center annual symposium we hosted two visitors today.  Jim Randerson from UC Irvine and Ben Santer from Lawrence Livermore stopped to chat about land atmosphere interactions and climate.

 Iryna Dronova from Landscape Architecture gave a Biomet Lab seminar on her research using 30 m LANDSAT and 5 m Rapid Eye products to study phenology at our wetland field sites.

Prof Jennifer Murphy from the University of Toronto stopped by to visit and discuss ammonia flux measurements before her BASC seminar.

Dr. Alexis Berg, from Princeton, stopped by to visit and discuss modeling evaporation in a warmer and arid world. Alexis gave the BASC seminar this week.


ddb attended a workshop on Oak Woodland Carbon in Berkeley


Kyle Hemes received funding from the National Center Airborne Laser Mapping for a proposal "Ecosystem structure as a driver of climatic, habitat, and hydrological services in heterogeneous restored wetlands".  It will collect new LIDAR data over our delta wetland sites. Congratulations


Baldocchi, D., H. Chu, and M. Reichstein. 2018. Inter-annual variability of net and gross ecosystem carbon fluxes: A review. Agricultural and Forest Meteorology 249:520-533.


Adam Wolf and his team from Arable https://www.arable.com/ visited the biometlab. Adam has developed a small integrated, low cost meteorological unit that measures in and out radiation variables, temperature, humidity, rain, etc and it can be used to assess water use, carbon uptake, crop wetness etc. We have one unit at Twitchell alfalfa and intend to add another at Bouldin Alfalfa

Bill Miller and Erik Johnson from LICOR visited.  They showed us the new flux processing software they are producing, that computes flux footprints, fills meteorological gaps with finding data from satellites or near by NOAA weather stations. Does plotting, too.

They also brought a prototype of a  moderate cost (~<k) laser based CO2, H2O and CH4 sensor.   For slow response measurements This will be a major technological step up from the NDIR sensors they have in the past for applications for trace gas monitoring in the atmosphere, emissions using box budgets and coupled with chambers.  

  This material is based upon work supported by the National Science Foundation and US Department of Energy. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the supporters.